Magnetic and Flotation: A Comprehensive Research for Recovery from Zinc Leach Residue

2011 ◽  
Vol 402 ◽  
pp. 510-513
Author(s):  
Chen Hu Zhang ◽  
Jian Hua Chen
Keyword(s):  
Zinc Sulfide ◽  
Leach Residue ◽  
Magnetic Separator ◽  
Lead And Zinc ◽  
Zinc Concentrate

According to the properties of the zinc leach residue, the recoveries of lead and zinc from residue have been studied in this paper. At first, ZnO.Fe2O3 was recovered by magnetic separator, and the grade of zinc concentrate is 14.89% and the recovery is 65%.Next step, zinc sulfide was recovered by flotation, and the grade of zinc concentrate is 29.65% and the recovery is 29.65%.The last, the lead residue was recovered by flotation and the grade of lead concentrate is 17.21% and the recovery is 56.37%. The technology is very effective to enrich value metals, and realize utilization of resource protecting the environment.

scholarly journals Critical importance of pH and collector type on the flotation of sphalerite and galena from a low-grade lead–zinc ore

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Abdolrahim Foroutan ◽  
Majid Abbas Zadeh Haji Abadi ◽  
Yaser Kianinia ◽  
Mahdi Ghadiri
Keyword(s):  
Iron Ore ◽  
Low Grade ◽  
Zinc Recovery ◽  
Flotation Process ◽  
Ph Values ◽  
Lead And Zinc ◽  
Optimum Ph ◽  
Iron And Zinc ◽  
Lead Zinc ◽  
Zinc Concentrate

AbstractCollector type and pulp pH play an important role in the lead–zinc ore flotation process. In the current study, the effect of pulp pH and the collector type parameters on the galena and sphalerite flotation from a complex lead–zinc–iron ore was investigated. The ethyl xanthate and Aero 3418 collectors were used for lead flotation and Aero 3477 and amyl xanthate for zinc flotation. It was found that maximum lead grade could be achieved by using Aero 3418 as collector at pH 8. Also, iron and zinc recoveries and grades were increased in the lead concentrate at lower pH which caused zinc recovery reduction in the zinc concentrate and decrease the lead grade concentrate. Furthermore, the results showed that the maximum zinc grade and recovery of 42.9% and 76.7% were achieved at pH 6 in the presence of Aero 3477 as collector. For both collectors at pH 5, Zinc recovery was increased around 2–3%; however, the iron recovery was also increased at this pH which reduced the zinc concentrate quality. Finally, pH 8 and pH 6 were selected as optimum pH values for lead and zinc flotation circuits, respectively.

Recovery Pb, Zn and S from a Chinese Lead-Zinc Mine Beneficiation Plant Tailing

2014 ◽  
Vol 997 ◽  
pp. 583-586
Author(s):  
Yong Chen ◽  
Yong Sheng Song ◽  
Gui Ying Zhou ◽  
Wen Juan Li
Keyword(s):  
Magnetic Susceptibility ◽  
Size Analysis ◽  
Mineral Analysis ◽  
Beneficiation Plant ◽  
Mineral Liberation ◽  
Lead And Zinc ◽  
Lead Zinc ◽  
Zinc Mine ◽  
Characterisation Techniques ◽  
Zinc Concentrate

Detailed characterisation and recovery of galena, sphalerite, and pyrrhotite from the beneficiation plant tailing of YouXi, China, was investigated. Different characterisation techniques viz. size analysis, chemical analysis, mineral analysis by Mineral Liberation Analyser（MLA）were carried out. Based on the appreciable differences in specific gravity, floatability and magnetic susceptibility between the desired lead, zinc, sulphur minerals and the gangue minerals, the flow sheets comprising desliming, flotation and magnetic separation, was used to recover galena, sphalerite, and pyrrhotite values. A lead and zinc concentrate of Pb 16.02%, Zn 35.1% and sulphur concentrate assays 35% S and 56% Fe can be produced from the tailing.

Study on Recovery of Lead-Zinc Tailing Ore by Electrochemical Flotation

2014 ◽  
Vol 675-677 ◽  
pp. 1451-1454 ◽  
Author(s):  
Gui Ying Zhou ◽  
Wen Juan Li ◽  
Yong Chen ◽  
Yong Sheng Song
Keyword(s):  
Potential Range ◽  
Low Grade ◽  
Separation Potential ◽  
Potential Control ◽  
Iron Sulfur ◽  
Lead And Zinc ◽  
High Oxidation ◽  
Lead Zinc ◽  
Pulp Potential ◽  
Zinc Concentrate

The tailing in a large lead-zinc-iron-sulfur multi-metallic mine has rich reservation in variety of metallic minerals. It has been difficult to recover because of all kinds of reasons. The challenges faced by lead-zinc ore beneficiation are, low grade and recovery of lead and zinc concentrate for fine disseminated grain size, high oxidation rate and close intergrowth. This paper presents a Pulp Potential Control Flotation by stages technique to improve the flotation performance of the lead-zinc ores. In the electrochemical potential controlling flotation processing, using DDTC as collector, the separation potential range of galena and sphalerite with pyrrhotite can be achieved. Flotation circuit of lead-zinc-silver tailing ore was achieved.

Processing of the lead-zinc ore from the Pavlovsk deposit

2020 ◽  
pp. 33-39
Author(s):  
S. S. Plyasovitsa ◽  
◽  
O. A. Kravtsova ◽  
N. V. Ivanova ◽  
I. Yu. Semenov ◽  
...  
Keyword(s):  
Metal Concentration ◽  
High Quality ◽  
Valuable Component ◽  
Flotation Process ◽  
X Ray ◽  
Lead And Zinc ◽  
Mineralogical Study ◽  
Lead Zinc ◽  
Zinc Concentrate

The authors carried out a mineralogical study and substantiated a concentration process developed for the lead-zinc ores of the Pavlovsk deposit. The concentration of the valuable component in each type of concentrate is determined by the amount of pyrite contained in the ore. It was established that the main loss of lead with flotation tailings is associated with oxidized phases, which are mainly found in fine material. Lead sulphides account for 30% of the entire waste tailings. Using the results of the mineralogical study, a flotation process was developed that involves a staged separation of commercial lead and zinc concentrates, as well as waste tailings. The obtained zinc concentrate has a consistently high quality of 57–58% with an 85–90% recovery. The metal concentration in the lead concentrate 1 is 45%, with the recovery being 43%. On the basis of the experimental results, the authors propose to use an X-ray radiometric separation method for coarse ore, which will help reduce the amount of incoming ore by 30% while minimizing the loss of lead and zinc.

Factors on Leaching Zinc and Copper from Zinc Leach Residue

2014 ◽  
Vol 633 ◽  
pp. 169-172
Author(s):  
Li Jiao Yang ◽  
Nan Chun Chen ◽  
Xia Ping Zhong ◽  
Jun Gao ◽  
Yao Xiu Lang ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Zinc Sulfide ◽  
Zinc Sulfate ◽  
Acid Leaching ◽  
Ion Concentration ◽  
Leach Residue ◽  
Sulfuric Acid Leaching ◽  
Edta Titration ◽  
Solid Ratio ◽  
Copper And Zinc

It is found that cuprous sulfite, zinc sulfate and zinc sulfide were the main phases of copper and zinc in zinc leach residue, through analyzing its composition and phase characteristics by XRF and XRD. The method that cooperate sulfuric acid leaching with oxidant was chosen. 60 g/L H2SO4 at 60 °C for 2 h with 4% KMnO4 and liquid/solid ratio of 5..1, 84.29 % of Cu and 92.02 % of Zn are extracted. The ion concentration of copper and zinc are tested by UV-VIS spectrophotometer and EDTA titration respectively. The results show that the amount of acid is sufficient for leaching at the condition of 60 g/L H2SO4 and liquid/solid ratio of 5..1. At the same time, copper change from low valence into high valence after adding KMnO4 which strengthen the leaching, and the chemical reaction can reach balance at 60 °C for 2 h. This method has good extraction effect on copper and zinc.

Using a New Bulk Flotation Process to Enhance the Recovery of Mineral Beneficiation in a Lead-Zinc Sulfide-Oxide Mixed Ore

2013 ◽  
Vol 634-638 ◽  
pp. 3545-3550
Author(s):  
Yi Qiang Liang ◽  
Xu Dong Zhang ◽  
Han Ping Zhang ◽  
Mei Hua Liu
Keyword(s):  
Zinc Sulfide ◽  
Phase Analysis ◽  
Sem Analysis ◽  
Flotation Process ◽  
Oxidation Rates ◽  
Lead And Zinc ◽  
Mineral Beneficiation ◽  
Lead Zinc ◽  
Important Means ◽  
Considerable Benefit

The properties of a lead-zinc ore are investigated by XRD and SEM analysis methods. Results show that the ore assays 1.27 per cent Pb and 1.62 per cent Zn, mainly occurring in the form of sulfide minerals. Through lead and zinc phase analysis, it is known that the distribution of galena reaches 63.78 per cent, and that of sphalerite is up to 77.16 per cent. And the oxidation rates of lead and zinc will become much more serious as the depth of exploitation increases, which is a great trouble that the mine faces with. So how to improve the recovery of mineral beneficiation is an important means to enhance the economical benefits in the mine. Many tests work have been done to develop a new bulk flotation process to enhance the Pb and Zn recovery. Flotation results of the closed circuit test indicate that the Pb and Zn recovery from the new bulk flotation process can be increase by 10 per cent and 2 per cent, respectively, which makes very considerable benefit for the mine.

scholarly journals Desulfurization kinetics of high lead and zinc sulfide containing slag with oxygen blowing

2019 ◽  
Vol 55 (2) ◽  
pp. 187-196
Author(s):  
K. Ouyang ◽  
Z.-H. Dou ◽  
T.-A. Zhang ◽  
Y. Liu ◽  
L.-P. Niu
Keyword(s):  
Zinc Sulfide ◽  
Spinel Phase ◽  
Xrd Analysis ◽  
Smelting Process ◽  
Experimental Conditions ◽  
Lead And Zinc ◽  
Desulfurization Process ◽  
Lead Zinc ◽  
Kinetics Of ◽  
High Lead

The desulfurization process of lead and zinc slag is an important smelting process to obtain lead and zinc. The aim of this paper is to study the desulfurization process of high lead and zinc sulfide containing slag with oxygen blowing. The predominance area diagrams of the Pb-Zn-Fe-S-O system (Pb/(Fe+Pb+Zn)=0.176, Zn/(Fe+Pb+Zn)=0.56) at various temperature were thermodynamically constructed. The physical properties, the chemical composition and the phase transformation of the desulfurization slag were investigated. The thermodynamic results indicated that lead, zinc, and iron can be oxidized to form high lead and zinc slag. The experimental results illustrated that the sulfur content in the oxidation slag can be reduced to less than 1% as temperature increased up to 1573 K. The XRD analysis of as-quenched slag shows the PbS and ZnS phase decreased, while zincite and spinel phase (ZnxFe3-xO4+y) emerged and increased as the reaction time increased. The desulfurization process of molten slag were considered to be the first-order reaction and the apparent activation energy was estimated to be 44.46 kJ/mol. Under the experimental conditions, the mass transfer in the gas and liquid phase was likely to be the restrictive step.

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